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Week 2 Notes Biology 111

by: amber weiss

Week 2 Notes Biology 111 Biology 111 Sec 008

amber weiss
GPA 3.7
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Topics in Contemporary Biology
Thomas Buettner

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About this Document

Here is what we covered the second week of class!
Topics in Contemporary Biology
Thomas Buettner
Class Notes
Bio 111




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This 4 page Class Notes was uploaded by amber weiss on Monday January 25, 2016. The Class Notes belongs to Biology 111 Sec 008 at Southern Illinois University Edwardsville taught by Thomas Buettner in Spring 2016. Since its upload, it has received 73 views. For similar materials see Topics in Contemporary Biology in Biological Sciences at Southern Illinois University Edwardsville.

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Date Created: 01/25/16
Biology 111 Professor Buettner Chapter 2 Day 2 Additional Notes Chapter 2 Section 7 6 60 6 60 09 09 09 09 6 60 6 60 Ion is a charged atom with an electrical charge result gain or loss of electrons Protons and electrons are and the charge an stable atom 2 ions with opposite charges attract Cation is positive Anions are negative Covalent tend to form organic molecules Ionic form inorganic molecules like salt Example NaCI Na donates electrons to Chlorine Cation Na positive Anion chlorine negative THEY A39ITRACT Salt any molecule formed by ionic bond where cation is anything other than hydrogen Examples KCI MgCI MgPO4 all are salts which are crystals They are weak because they dissolve in water Chapter 2 Section 8 6 60 Hydrogen Bond Intermolecular forces between molecules Help give larger molecules their 3D shape Chapter 2 Section 9 6 60 REACTIONS USE ARROWS 2H202 l 2H20 00 O these two o39s represents the 2 hydrogen being added with the oxygen OO O these 2 0395 also represent the hydrogen This gives you the 2 water39s LEFT SIDE OF THE ARROW HAS TO EQUAL THE RIGHT SIDE THE ARROW ACTS AS A SIGN Chapter 2 Section 10 6 60 6 60 6 60 6 60 6 60 6 60 6 60 Cohesion tendency molecules of some kind stick together Surface tension measures how dif cult it is to break the surface of liquid Solution liquid consist of uniform mix 2 substances Solvent dissolve H20 Solute the dissolving substance NaCl H20 and NaCl are polar Oil is nonpolar because it doesn39t mix with water oz Polar is when they mixdissolve kt Nonpolar is when they do not mix Chapter 2 Section 14 oz Acid compound release H to solution it is a good H donor oz Base compound accepts H molecule is good H acceptor HCI is hydrochloric acid oz pH scale is 014 0 most acidic 7 neutral 14 basic kt pH ogH Each pH unit 10 units A way to think about it is 0 10quot0 510quot5 710quot7 etc The following is the pH scale Ii1quot39quot392quotquot393quotquot394 quotquot Human uids 7 on test Pee6 on test Stomachgastric juices is higher on test 60 Buffer substance minimize charges in pH Will change Strong Acid Week Acid or Strong Base D Weak Base Chapter 2 Section 15 oz Fossil fuel dead plant matter dead stuff kt When giving off C02 Ocean can absorb the C02 which helps minimize the amount in atmosphere Chapter 2 Section 16 kt The cell has water in it and it is surrounded by water In tro 6 60 6 60 6 60 6 60 Biology 111 Professor Buettner Chapter 3 Additional Notes The Molecules of Cells Suf x oz Ose carbos 0 Ase enzymes AII enzymes are proteins Genes code proteins ON TEST Enzymes are proteins that have genes Chapter 3 Section 1 6 60 Carbon based moIecuIes organic compound 60 Any without carbon are INORGANIC 60 Carbon 4 Hydrogen in all 4 directions North South East and West Chapter 3 Section 2 6 60 6 60 Hydrocarbins form the chain think of them as a skeleton Carboxyl acid group Chapter 3 Section3 6 60 6 60 6 60 6 60 Carbos Proteins Nucleic acid They all follow the monomerpoymer model mon one and mer part Hydrolysis l hydrowater and lysisspitting Chapter 3 Section 4 6 60 6 60 6 60 Carbohydrates are small sugar molecules monomers they are the rst to burn Monosaccharides log you through in a re oz Lipids would be the 2nCI and proteins would be 3 emergency they are way too important Isomer equal parts but only In an Chapter 3 Section 5 6 60 Disaccharidel oz Maltose qucosegucose oz Sucrose qucose fructose oz Lactose glucose gaIactose Chapter 3 Section 6 1 Starch molecules have little to no branching 2 Glycogen is highly branching long term 60 These are stored in Primary liver favorite Secondary once the liver is full is the skeletal muscles 3 Cellulose is similar to glucose but the linkage is different Fiber and roughage and bulk cellulose 4 Chitin is used in shrimp and lobster Chapter 3 Section 11 oz Proteins Same bead structure as glucose


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